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Software Rule Settings To begin with, enter Design > Rules and adjust the options based on design requirements: Safety Spacing Settings: In PROTEL99SE, the Clearance Constraint under Routing defines the necessary spacing between traces, pads, and vias of different networks. Single/Double-sided boards: Set spacing to 10-12mil. Multi-layer boards (four layers or more): Set spacing to 6-8mil. Routing Layer and Direction: Go to Routing Layers under Routing and set...

In circuit board manufacturing, various electroplating methods are employed to enhance performance, durability, and contact quality. This article focuses on four specialized electroplating methods commonly used in PCB (printed circuit board) welding processes. 1. Finger-Ring Electroplating Finger-ring electroplating involves plating rare metals, such as gold, on the edge connectors or gold fingers of circuit boards to provide low...

In circuit design, there are often principles that engineers assume to be correct, but in reality, they may lead to issues in performance or efficiency. Here are eight common circuit design misunderstandings every electronics engineer should be aware of: Misunderstanding 1: Thin Wires and Automatic Routing Are Good Enough for Low-Requirement PCB Design Comment: While automatic routing might...

After years of experience in PCB design, certain best practices have emerged. Here, we outline essential aspects of PCB layout, wiring, copper plating, and more, with a focus on optimizing performance and manufacturability. 1. Layout and Wiring Impact on Electrical Performance Separate Digital and Analog Ground: Although challenging, separating these can reduce noise. Understanding IC electrical...

Grounding is fundamental in electronic PCB circuit design, influencing stability, noise immunity, and overall performance. Grounding techniques range from basic single-loop analog grounding to advanced grounding methods for complex mixed-signal designs. These techniques become increasingly critical in high-frequency or high-EMC (Electromagnetic Compatibility) environments. Here’s a comprehensive overview of grounding techniques and methods for reducing ground loops to enhance...

Before explaining the inspection work after PCB wiring is completed, we will first introduce three special PCB routing techniques. The routing of PCB LAYOUT will be explained from three aspects: right-angle routing, differential routing, and serpentine routing: Right-angle routing (three aspects) The impact of right-angle routing on signals is mainly reflected in three aspects: first, the corner...

Electrostatic Discharge (ESD) can damage sensitive components such as MOSFETs, CMOS gates, and PN junctions, leading to issues like gate damage, short circuits, and even melted wiring. This guide offers practical strategies to design PCBs that effectively prevent ESD from harming the circuit. Key ESD Prevention Techniques for PCB Design 1. Layering Techniques Multi-layer PCBs: Use...

As electronic products become more advanced, they encounter more sources of electromagnetic interference (EMI) that can disrupt device function and potentially harm health. This guide explores strategies for designing PCB boards with optimized electromagnetic compatibility (EMC), focusing on reducing interference and increasing product resilience. 1. PCB Board Design PCB boards are essential components in electronic devices, providing...

Based on recent trends, improving efficiency is a key goal, and the trade-off of using slow switching devices for better EMI is not worth it. Superjunctions can improve efficiency in applications where planar MOSFETs struggle. Superjunction MOSFETs significantly reduce on-resistance and parasitic capacitance compared to traditional planar MOSFET technology. The significant reduction in on-resistance and...